Subscription Startup Resiliency

There are two ways to perform Subscription Matching using the HAPI-FHIR JPA Server:

1. Within a FHIR Server Endpoint using the SubscriptionMatchingInterceptor:

// FHIR Server Config
myDaoConfig.addSupportedSubscriptionType(Subscription.SubscriptionChannelType.RESTHOOK);
myDaoConfig.setSubscriptionMatchingEnabled(true);
mySubscriptionInterceptorLoader.registerInterceptors();

2. Outside of the FHIR Server Endpoint using a StandaloneSubscriptionMessageHandler:

// FHIR Server Config
myDaoConfig.addSupportedSubscriptionType(Subscription.SubscriptionChannelType.RESTHOOK);
myDaoConfig.setSubscriptionMatchingEnabled(false);
mySubscriptionInterceptorLoader.registerInterceptors();

Also, create your own interceptor within the FHIR Server that sends all Resources to a SubscribableChannel. Then subscribe the StandaloneSubscriptionMessageHandler to that SubcribableChannel:

// Message Consumer Config:
mySubscribableChannel.subscribe(myStandaloneSubscriptionMessageHandler);